1 min readfrom Machine Learning

Custom image encoder [P]

Our take

Building your own image encoder could be a promising approach for video frame classification, especially given your specific constraints of processing speed and deployment on CPU-only devices. By training a custom encoder on your dataset of millions of images, you may achieve both improved embedding generation speed and enhanced accuracy for your Transformer model. This tailored solution could outperform models like CLIP in your unique pipeline.

The question of whether to build a custom image encoder for video frame classification instead of leveraging established models like CLIP or DINO is both timely and significant in the rapidly evolving field of AI. The user’s context—processing video streams with a need for speed and efficiency—highlights a crucial intersection of performance and practicality. In an era where businesses increasingly rely on real-time data processing, the ability to tailor solutions to specific needs can be a game changer. This mirrors broader themes we've explored, such as the importance of customizing workflows, evident in articles like How to auto populate an Excel sheet based on a master data sheet? and Converting a formula from Sheets to Excel, which emphasize the necessity of adaptable tools in enhancing productivity.

The user's desire to replace a CLIP-S0 encoder with a custom one trained on their own dataset raises important considerations regarding the trade-offs between speed and accuracy. The existing models have been optimized for a wide range of applications, which is a testament to their robustness. However, they may not be perfectly suited for specialized tasks, especially when constraints such as CPU-only deployment come into play. Building an encoder tailored to a specific dataset of a few million images could indeed enhance both processing speed and the relevance of embeddings for the task at hand. This highlights an essential principle in AI development: specificity can yield better performance in niche applications, even if it means foregoing the broad applicability of existing models.

Moreover, the implications of this decision resonate beyond individual use cases. As organizations increasingly adopt AI solutions that require real-time processing, the demand for efficient, custom-built models is likely to rise. This trend could lead to a shift in how AI tools are developed and deployed, with more emphasis on user-specific adaptations rather than one-size-fits-all solutions. The conversation around deploying AI on smaller devices also reflects a broader industry trend toward edge computing, where processing power is moved closer to the source of data generation. This approach not only reduces latency but can also enhance privacy and security, as sensitive data does not need to traverse the internet for processing.

As this landscape continues to evolve, it prompts an essential question: How can developers balance the need for customized solutions with the benefits of existing frameworks? The exploration of custom image encoders indicates a path forward that embraces innovation while also acknowledging the practical realities of deployment and user needs. For those in the field, this presents an exciting opportunity to experiment and innovate, potentially leading to more agile and responsive AI applications.

In conclusion, the choice to develop a custom image encoder may well be a step toward enhancing both speed and accuracy in video frame classification tasks. It serves as a reminder that as AI technology advances, the conversation must continually shift to focus on practical applications that prioritize user outcomes. As we look to the future, it will be fascinating to observe how these trends unfold and what new innovations emerge from the intersection of customization and efficiency in AI.

Hello, I would like to know whether building my own image encoder would be a good idea instead of using models like CLIP, SigLIP/SigLIP2, or DINO.

My use case is video frame classification.

My pipeline is the following: the client sends me a video stream, sampled at 1 frame per 1 or 2 second, forming segments of 15 frames (30 seconds). I compute embeddings for these frames and send them to a small custom Transformer (1.5M to 9M parameters).

This works very well on GPU. However, I have two main constraints: processing speed and deployment on small CPU-only devices.

A CLIP-S0 encoder processes around 10 images per second on 4 vCPUs. I would like to replace it with my own encoder trained on my dataset (a few million images), with only a few million parameters and around 4 to 5 labels.

My question is whether this is a good approach, and whether it would improve both embedding generation speed and the accuracy of my Transformer model.

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